JP6742602B2 - Shot processing equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shot processing apparatus, and more particularly to a shot processing apparatus for cleaning a work with a projection material.

The following Patent Documents 1 and 2 describe a so-called drum-type shot processing apparatus in which an object to be processed (hereinafter, referred to as a “work”) is placed in a drum and is agitated to blast the work with a projection material. There is. Each shot processing device is provided with a drum formed into a bottomed tubular shape having an opening, and a projector for projecting the projection material. In the shot processing apparatus described in Patent Document 1, the drum rotates inside the cabinet, so that the drum is selectively arranged at the work input position, the work processing position, and the work discharge position. Then, in a state where the drum is arranged at the work processing position, the drum is rotated about the cylindrical axis of the drum to agitate the work in the drum, and the projection material is put in the drum from the projector provided in the cabinet. Is projected. As a result, the projection material is applied to the work, and the work is ground and cleaned.

Further, in the shot processing device described in Patent Document 2, the projector is provided in a door portion that opens and closes the opening of the drum, and with the door portion closing the opening of the drum, the cylindrical shaft of the drum is centered. The projection material is projected into the drum from the projector while the drum is rotated to stir the work in the drum. As a result, the projection material is applied to the work, and the work is ground and cleaned.

JP, 2011-194486, A JP, 2011-110642, A

However, in the shot processing apparatus described in Patent Document 1, since the drum rotates in the cabinet, a space is provided between the drum and the projector so as not to interfere with the projector when the drum rotates. .. Therefore, there is a problem in that the distance between the work in the drum and the projector becomes long, and the projection efficiency of the projection material onto the work decreases.

On the other hand, in the shot processing apparatus described in Patent Document 2, since the projector is provided at the door portion that opens and closes the opening of the drum, the distance between the work in the drum and the projector is relatively large. Since the length of the shot processing apparatus is shortened, the problem of the shot processing apparatus of Patent Document 1 described above can be solved. However, the door of this shot processing apparatus moves to the upper side of the side wall of the drum when the opening of the drum is opened. At this time, the projection material may leak from the projector of the door portion and scatter, and it is necessary to suppress the possibility of scattering of the projection material.

The present invention has been made in order to solve the problems of the above-described conventional technology, and provides a shot processing apparatus capable of suppressing the scattering of the projection material to the outside without lowering the projection efficiency. With the goal.

In order to achieve the above-mentioned object, the present invention is a shot processing apparatus for blasting and cleaning a work by a blasting material, which is a bottomed cylinder having a cabinet and an opening that is placed in the cabinet and into which the work can be loaded A drum which is formed in a shape, and which is selectively arranged at a work input position where a work is input, a work processing position where the work is blasted by a projection material, and a work discharge position where the work is discharged, A projector that projects projection material into the drum, and a door portion that opens and closes the opening of the drum and that has a projection opening for the projection material, to which the projection machine is attached, and the projection material is projected from the projection opening. The door has a projection part that is arranged above the opening of the drum when the opening of the drum is opened, and the door is provided below the lower end of the door of the cabinet. The blast material receiver is provided, and the blast material receiver is provided so as to correspond to the horizontal movement range when the lower end of the door is opened and closed .

According to the present invention thus configured, since the projector is attached to the door portion that opens and closes the opening of the drum, the distance between the work in the drum and the projector becomes relatively short, and The projection efficiency of the projection material can be improved. Further, since the projection port of the projector provided on the door when the opening of the drum is opened is arranged above the opening of the drum, the projection material leaked from the projector through the projection port when the door moves. Can be prevented from falling into the opening of the drum, and thereby scattering the projection material outside the shot processing device. Furthermore, according to the present invention, when the projection material leaks from the projector when the door is opened and closed, the projection material receiver is provided corresponding to the horizontal movement range when the lower end of the door is opened and closed. Can receive projectiles. As described above, according to the present invention, it is possible to further prevent the projection material from scattering outside the shot processing apparatus.

In the present invention, preferably, the door portion is attached to the cabinet via a link arm, and the link arm has one end rotatably attached to the door portion and the other end rotatably attached to the cabinet, The other end of the link arm is located above the one end when the door is open and when the drum is open.

According to the present invention thus configured, since the other end of the link arm is located above the one end in each of the state in which the door portion opens and the state in which the drum opening is closed, The door portion is suspended from the cabinet and moves within the range suspended from the cabinet to open and close the opening of the drum. As described above, according to the present invention, since the movement range of the door portion that opens and closes the opening of the drum is small, the door portion can be moved with a small amount of power, and thus the cost can be suppressed.

In the present invention, preferably, a communication portion that connects the blast material receiver and the interior of the cabinet is formed near and above the blast material receiver of the cabinet.

According to the present invention configured as described above, the blast material received by the blast material receiver provided in the cabinet can flow into the interior of the cabinet through the communication portion. Therefore, according to the present invention, it is possible to prevent the blast material from overflowing from the blast material receiver and scattering of the blast material to the outside of the shot processing apparatus, thereby further suppressing the blast material from scattering to the outside. be able to.

In the present invention, preferably, a plurality of through holes are provided in the outer peripheral wall of the drum, and further, a shield member is provided so as to cover the plurality of through holes from the outside of the drum. A double structure including a first shielding part having a plurality of first communication holes and a second shielding part having a plurality of second communication holes formed at a position not overlapping the first communication hole of the first shielding part. Is.

According to the present invention configured as described above, even when the projection material projected from the projector passes through the through hole of the drum, the projection material hits the first shielding portion and the second shielding portion of the shielding member, While attenuating the momentum of the shot material, the shot material is dropped into the lower part of the cabinet through the first communication hole of the first shielding portion and the second communication hole of the second shielding portion. Therefore, according to the present invention, it is possible to prevent the projection material that has come out from the through hole of the drum from bouncing and scattering from the cabinet to the outside.

In the present invention, preferably, the drum includes an outer peripheral wall and a bottom wall, and a drum case that integrally covers the outer peripheral wall and the bottom wall is provided outside the drum.

According to the present invention having such a configuration, since the shot material that has come out from the through hole of the drum hits the drum case and is attenuated, abrasion of the inside of the cabinet due to the shot material can be suppressed. As a result, according to the present invention, running costs can be reduced.

In the present invention, preferably, a drum case that covers the drum and the shielding member is provided on the outer side of the shielding member.

According to the present invention having such a configuration, the projection material that has come out of the through hole of the drum hits the shielding member and further the drum case, and is therefore further attenuated. Therefore, it is possible to further suppress the abrasion of the inside of the cabinet due to the shot material. As a result, according to the present invention, the running cost can be further reduced.

In the present invention, preferably, a projection material discharge port for discharging the projection material inside the drum case to the outside of the drum case is formed below the drum case when the drum is at the work processing position.

According to the present invention thus configured, the blast material that has emerged from the through hole of the drum to the outside of the drum hits the drum case, is attenuated, and is discharged inside the cabinet from the blast material discharge port formed on the lower side of the drum case. Drop the shot material to the bottom. As a result, according to the present invention, it is possible to prevent the projection material that has come out from the through hole of the drum from bouncing back and scattering from the cabinet to the outside.

In the present invention, preferably, the door portion is formed with an intake opening penetrating the outside of the door portion, and on the drum side of the intake opening, the projection material passes through the intake opening to the outside of the door portion. The protector which suppresses is provided.

According to the present invention thus configured, even if the projection material projected from the projector is reflected in the drum and scattered to the intake opening of the door portion, the protector causes the projection material to move from the intake opening to the door portion. Outgoing is suppressed.

The present invention is preferably further provided on the upper side of the projector, a blast material tank for storing the blast material, an introducing pipe attached to the blast material tank, and supplying the blast material to the lower side, and the introduction tube. An introducing cylinder provided on the lower side of the pipe, and a projecting material introducing port opening upward is formed at a position corresponding to the introducing pipe in the introducing cylinder. The introduction port is set to a size capable of receiving the projection material supplied from the introduction pipe even when the introduction cylinder moves when the door is opened and closed.

According to the present invention configured as described above, the size of the projection material introduction port is set so that the introduction cylinder can receive the projection material from the introduction pipe of the projection material tank even when it is moved by opening and closing the door portion. Therefore, it is possible to suppress the projection material from scattering from the introduction pipe to the outside of the shot processing apparatus.

In the present invention, preferably, the introduction tube moves in accordance with opening and closing of the door portion, and the introduction tube moves following the movement of the introduction tube.

According to the present invention configured as described above, since the introduction pipe follows the movement of the introduction cylinder, the projection material in the projection material tank can be more reliably transferred to the introduction cylinder even when the introduction cylinder moves by opening and closing the door. Can be supplied to. As a result, according to the present invention, it is possible to further suppress the projection material from scattering from the introduction pipe to the outside of the shot processing apparatus.

In the present invention, preferably, the introduction tube is formed with a joint portion that bends following the introduction tube.

According to the present invention having such a configuration, since the joint portion is formed in the introduction pipe, the introduction pipe can be reasonably bent even when the introduction pipe moves by opening and closing the door portion. As a result, the load on the introduction pipe is reduced, so that the durability of the introduction pipe can be improved as compared with the case where the introduction pipe is formed of a bellows-type hose or a rubber hose. As a result, according to the present invention, the running cost can be further reduced.

According to the shot processing apparatus of the present invention, it is possible to suppress the scattering of the projection material to the outside without lowering the projection efficiency.

1 is a side view showing a shot processing apparatus according to an embodiment of the present invention. 1 is a front view showing a shot processing apparatus according to an embodiment of the present invention. It is sectional drawing which shows the drum etc. in the state where the door part of the shot processing apparatus by embodiment of this invention was closed. It is sectional drawing which shows the drum etc. in the state which the door part of the shot processing apparatus by embodiment of this invention opened. FIG. 6 is a partial cross-sectional view showing the introduction tube and the like in the state where the door of the shot processing apparatus according to the embodiment of the present invention is closed. FIG. 3 is a partial cross-sectional view showing the introduction tube and the like with the door portion of the shot processing apparatus according to the embodiment of the present invention opened. FIG. 3 is a cross-sectional view showing a drum of the shot processing apparatus according to the embodiment of the present invention. It is sectional drawing seen along the AA line of FIG. 7A. FIG. 4 is a cross-sectional view showing a state in which the drum of the shot processing apparatus according to the embodiment of the present invention is arranged at a work input position. FIG. 8B is a cross-sectional view showing a state where the drum has moved from the work input position of FIG. 8A to the work processing position. It is a sectional view showing the state where the opening of the drum was closed at the work processing position. It is sectional drawing which shows the state which opened the opening of the drum in the workpiece processing position. FIG. 9D is a cross-sectional view showing a state where the drum has moved from the work processing position in FIG. 8D to the work ejection position. It is the schematic which looked at the door part of the shot processing device by an embodiment of the present invention from the direction of a field. It is an expanded sectional view seen along the BB line of FIG. It is an expanded sectional view seen along the CC line of FIG.

Hereinafter, a shot processing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the shot processing apparatus 10 includes a cabinet 12, a drum 14 accommodated in the cabinet 12, and a door portion 20 installed on the opening 18 side of the drum 14. .. The cabinet 12 is provided with a carry-in/out port 16 (see FIGS. 8A and 8E), through which work can be carried in/out, and a processing-side opening 24 (see FIG. 3) is provided. The processing side opening 24 is formed so as to penetrate therethrough at a position corresponding to the opening 18 of the drum 14 when the drum 14 is arranged at the work processing position P2.

The drum 14 has an opening 18 into which a work can be input, and has a bottomed cylindrical shape in which an end portion on the opposite side of the opening 18 is closed by a drum bottom wall 26. The drum 14 is rotatable by a drive motor 28 (see FIG. 3) around the cylinder axis L. Further, the drum 14 can be rotated by a rotation mechanism 30 about a rotation axis L2 that is orthogonal to the cylindrical axis L and provided horizontally. The drum 14 rotates around a rotation axis L2 so that the drum 14 can take a work input position P1, a work processing position P2, and a work discharge position P3 in the cabinet 12 (see FIGS. 8A to 8E). .. Further, a plurality of through holes 32 (see FIG. 7A) are formed in the drum bottom wall 26 side of the outer peripheral wall 15 of the drum 14 and a part of the drum bottom wall 26. The size of these through holes 32 is such that the projection material can pass through and the work cannot pass through. The rotating shaft L2 is attached to a drum case 136 described later.

Further, on the loading/unloading port 16 side of the cabinet 12, there is provided a work loading device (not shown) for loading the work carried from the outside of the shot processing device 10 into the drum 14. This work input device includes a box-shaped input bucket for accommodating a work, and a bucket loader for tilting the input bucket. This bucket loader moves the loading bucket up and down to the loading/unloading port 16 and moves the work stored in the loading bucket 16 from above the loading/unloading port 16 to the position of the work loading position P1 inside the cabinet 12 (see FIG. 8A). It is designed to be tilted so as to be put into the inside of 14.

Further, a work discharge device (not shown) is provided between the carry-in/out port 16 side of the cabinet 12 and the work input device. The work discharging device receives a shot-processed work that is discharged from the inside of the drum 14 located at the work discharging position P3 (see FIG. 8E) at the time of discharging the work through the lower side of the carry-in/out port 16 and carries out the carry-out vibration. The feeder includes a work receiving trough and a carry-out vibrating feeder that carries out the work in the work receiving trough to the outside of the shot processing apparatus 10.

A circulation device 34 is provided inside the cabinet 12. The circulation device 34 includes a bucket elevator 36 to which a bucket (not shown) for lifting the shot material upward is attached, a separator 38 connected to an upper discharge port of the bucket elevator 36, and an upper screw conveyor provided below the separator 38. 39 and a projection material tank 40, and an introduction pipe 46 (see FIG. 5) connected from the projection material tank 40 to an introduction cylinder 44, which will be described later, attached to the projector 42. A lower screw conveyor 48 is provided below the cabinet 12 to collect the shot material toward the bucket elevator 36 (see FIG. 2 ).

Further, the bucket elevator 36 and the separator 38 are connected to the dust collector 52 via the duct 50. The dust collector 52 is equipped with a suction fan (not shown) so that light dust or the like that does not collect in the lower portion of the cabinet 12 is sucked and discharged.

As shown in FIG. 3, the projector 42 is a centrifugal projector including a main body case 54 and an impeller (not shown) housed inside the main body case 54. The main body case 54 is formed in a substantially trapezoidal shape in a side view (see also FIG. 5 ), and is also formed in a rectangular tube shape in which an upper side end and a lower side end of the substantially trapezoidal shape are opened. .. Then, a case lid 56 is attached to the upper side end of the main body case 54 via a sealing material so as to close the opening. The lower side end of the body case 54 is attached to the outer surface of the door 20.

The door 20 is formed in a substantially rectangular plate shape (see FIG. 9). A projection port 43 is formed in the door portion 20, and the projection material is projected from the projector 42 into the drum 14 through the projection port 43.

A plurality of protrusions 68 are formed on the side surface of the drum 14 of the door portion 20. These protruding portions 68 are the door side wall portions 23 protruding from the outer edge of the door portion 20 toward the drum 14 side, and the outer protruding portions 69 facing the door side wall portion 23 and formed on the cylindrical axis L side of the drum 14. And a seal member 73 provided between the door side wall portion 23 and the outer protruding portion 69, and an annular wall provided in a ring shape when viewed from the direction of the cylindrical axis L and sandwiching the outer peripheral wall 15 of the drum 14 from the outside and the inside. And a pair of arranged inner protrusions 71. In this way, the facing portion of the drum 14 and the pair of inner protruding portions 71 of the door portion 20 has a labyrinth structure. The seal member 73 is in contact with the wall portion 70 of the cabinet 12 in which the processing side opening 24 is formed. Here, since the drum 14 and the protruding portion 68 of the door portion 20 do not come into contact with each other, the drum 14 can rotate without contacting with the door portion 20.

Further, as shown in FIGS. 10A and 10B, the door 20 is provided with intake openings 57 and 58. A protector 60 is provided in the intake opening 57, and the protector 60 includes a drum side member 62 and a door outer side member 64. The drum-side member 62 is formed in a substantially rectangular box shape and has a size larger than the intake opening 57, and covers the intake opening 57 from the back surface side of the door portion 20 (see FIG. 9 ). The lower end portion 66 of the drum side member 62 is separated from the intake opening 57 and is open so as to be able to communicate with the inside of the drum side member 62.

The door outer side member 64 of the protector 60 is formed in a substantially rectangular tube shape having an internal space of substantially the same size as the intake opening 57. Flanges 76 extending in a direction substantially orthogonal to the side wall portion 74 are formed at both axial end portions of the door outer side member 64. The flange 76 on the side of the door 20 is joined to the door 20, and a mesh material 78 is attached to the flange 76 on the side opposite to the flange 76 on the side of the door 20.

Further, three angle members 80 extending in the same direction are attached to the side wall portion 74 of the door outer side member 64 side by side. The angle member 80 has a substantially L-shaped cross section orthogonal to the longitudinal direction, and is attached so as to be inclined in the same direction so as not to block the intake opening 57.

Similarly, the intake opening 58 is also provided with a protector 88 including a drum side member 84 and a door outer side member 86. The protector 88 has substantially the same structure as the protector 60 except that the size and the number of the angle members 80 provided in the door outer side member 86 are different.

As shown in FIG. 1, a plurality of link arms 90 are attached to the door section 20. The link arm 90 includes a pair of left and right first link arms 92 provided above the door portion 20 and a pair of left and right second link arms 94 provided below the door portion 20. .. The first link arm 92 is formed in an elongated shape extending in the up-down direction, and one end portion 96 in the longitudinal direction of the first link arm 92 is located above the outer surface of the door section 20. It is rotatably attached to the attached first bracket 98 (see FIGS. 3 and 4). Further, the other longitudinal end portion 100 of the first link arm 92 is rotatably attached to a portion of the cabinet 12 above the first bracket 98.

Further, the second link arm 94 is formed in an elongated shape extending along the up-down direction, like the first link arm 92, and one end 97 in the longitudinal direction of the second link arm 94 is formed. It is rotatably attached to the second bracket 102 attached to the lower side of the outer surface of the door portion 20 (see FIGS. 3 and 4). The other end 101 of the second link arm 94 in the longitudinal direction is rotatably attached to a portion of the cabinet 12 above the second bracket 102.

The door 20 is provided with an opening/closing cylinder 104. The opening/closing cylinder 104 has a structure that expands and contracts along the lower surface of the door portion 20, and a connecting arm 106 is attached to the tip end portion thereof. The connecting arm 106 is elongated along a direction substantially perpendicular to the lower surface of the door portion 20, and the base end portion 108 is fixed at a position corresponding to the other end portion 100 of the first link arm 92. ing. When the opening/closing cylinder 104 contracts, the connecting arm 106 rotates around the base end 108 in the direction of moving the tip end downward, whereby the door 20 opens the opening of the drum 14. Move in the direction (see FIG. 4). Here, when the door 20 opens the opening 18 of the drum 14, the projection port 43 of the door 20 is arranged above the opening of the drum 14.

As shown in FIG. 5, an introducing cylinder 44 is attached to the projector 42 of the door section 20. The introducing cylinder 44 includes an upper introducing cylinder 45 and a lower introducing cylinder 47. The upper introduction tube 45 is formed in a substantially cylindrical shape with the vertical direction as the axial direction, and the projection material introduction port 110 is formed at the upper end. The projection material introducing port 110 is set to have a larger opening area than the opening at the end portion on the lower side. An upper introduction cylinder flange 49 is formed at the lower end of the upper introduction cylinder 45.

The lower introduction tube 47 is formed in a substantially cylindrical shape with the vertical direction as the axial direction, the upper end is connected to the lower end of the upper introduction tube 45, and the lower end is the side surface of the main body case 54 of the projector 42. Is bent to be connected to. Here, a lower introduction cylinder flange 51 is formed at the upper end portion of the lower introduction cylinder 47, and this lower introduction cylinder flange 51 is joined to the upper introduction cylinder flange 49, and the upper introduction cylinder 45 and the lower introduction cylinder 45 are joined together. The introduction tube 47 is connected.

A blast material tank 40 is provided above the projector 42. An opening that opens downward is formed at the lower end of the blast material tank 40, and an introduction pipe 46 is attached at a position corresponding to this opening. The introduction pipe 46 includes an upper introduction pipe 114, a lower introduction pipe 115, and a flow rate adjusting device 112, and the amount of projection material stored in the projection material tank 40 and flowing downward from the projection material tank 40 is a flow rate. It can be adjusted by the adjusting device 112. Then, the shot material passing through the flow rate adjusting device 112 is made to flow downward through the upper introduction pipe 114.

A lower introduction pipe 115 is provided at the lower end of the upper introduction pipe 114. The lower introduction pipe 115 is formed in a substantially cylindrical shape with the vertical direction as the axial direction. The opening at the upper end of the lower introduction pipe 115 is set larger than the opening at the lower end. A joint 118 is provided between the upper introduction pipe 114 and the lower introduction pipe 115. The joint portion 118 is for connecting the lower introduction pipe 115 to the lower end of the upper introduction pipe 114 and for bending the lower introduction pipe 115 with respect to the upper introduction pipe 114. Here, the lower introduction pipe 115 is bent so as to follow the introduction cylinder 44 that moves in accordance with the opening and closing of the door 20 (see FIG. 6 ). Further, a part of the lower end portion of the upper introduction pipe 114 is inserted into the opening at the upper end portion of the lower introduction pipe 115. Further, a lower end portion of the lower introduction pipe 115 is partially inserted into the projection material introduction port 110 of the upper introduction cylinder 45.

As shown in FIG. 7A, a shielding member 120 is provided on the outer peripheral wall 15 of the drum 14. The shielding member 120 is provided corresponding to the portion of the outer peripheral wall 15 of the drum 14 where the plurality of through holes 32 are formed. The shielding member 120 has a first shielding portion 124 formed in a cylindrical shape centered on the cylindrical axis L of the drum 14, and a cylindrical shielding portion 124 formed along the cylindrical axis L of the drum 14. It has a double structure including a second shielding portion 126 provided on the outer side of the. The length of the first shield portion 124 along the cylindrical axis L is set to cover a part of the outer side of the drum bottom wall 26. The length of the second shield 126 along the cylindrical axis L is set to cover the outer side of the portion of the outer peripheral wall 15 of the drum 14 where the through hole 32 is formed. Here, the second shield 126 is partially supported by a part of the plurality of protrusions 128 formed on the outer peripheral wall 15 of the drum 14.

A shield bottom 130 is attached to the lower end of the first shield 124 and the lower end of the second shield 126. The drum bottom wall 26 is inserted into the central portion of the shield bottom portion 130.

As shown in FIG. 7B, the first shielding portion 124 is formed with a plurality of first communication holes 132 penetrating in the plate thickness direction. In addition, the second shielding portion 126 is formed with a plurality of second communication holes 134 that are formed so as to penetrate in the plate thickness direction and that do not overlap the first communication holes 132. The first communication hole 132 is formed within a part of the first shield portion 124 on the side of the shield bottom portion 130, and in the present embodiment, a substantially central portion of the first shield portion 124 (see a chain line A in the figure). To the shield bottom 130. Similarly, the second communication hole 134 is also formed within a part of the second shield portion 126 on the shield bottom portion 130 side, and in the present embodiment, the position corresponding to the chain line A in the figure of the second shield portion 126. To the shield bottom 130.

As shown in FIGS. 3 and 4, a drum case 136 is provided outside the drum 14 and the shielding member 120. The drum case 136 is formed in a cylindrical shape with a bottom centered on the cylindrical axis L of the drum 14, and the drum bottom wall 26 is fastened to the bottom portion 138. A case wall member 140 is provided on the outer peripheral portion of the drum case 136. The case wall member 140 is formed of a plurality of substantially plate-shaped members and is attachable to and detachable from the drum case 136. The case wall member 140 is arranged so as to substantially cover the drum bottom wall 26 from the vicinity of the opening 18 of the drum 14. Here, on the lower side of the case wall member 140, a projection material discharge port 142 that communicates the inside and outside of the drum case 136 (inside the cabinet 12) is provided. In addition, the plurality of members serving as the case wall member 140 are set to have a size that can be carried by a single worker.

An upper contact member 146 is provided on the upper end 144 of the drum case 136. The upper contact member 146 is extended to the outer side of the drum case 136. Further, a rubber upper receiving portion 154 extending from the inner surface of the upper wall portion 148 of the cabinet 12 into the cabinet 12 is provided. The upper contact member 146 is configured to contact the upper receiving portion 154 when the drum 14 is located at the work processing position P2.

A lower contact member 150 is provided on the outer surface of the drum case 136 on the lower side of the bottom portion 138, and the lower contact member 150 is extended to the outer side of the drum case 136. .. Further, a rubber lower receiving portion 156 extending from the inner surface of the lower wall portion 152 of the cabinet 12 into the cabinet 12 is provided. The lower contact member 150 contacts the lower receiving portion 156 when the drum 14 is located at the work processing position. With this structure, it is possible to prevent the projection material projected from the projector 42 from leaking from the carry-in/out port 16 of the cabinet 12 to the outside.

A projection material receiver 158 is provided below the lower end portion 21 of the door portion 20. The shot material receiver 158 is provided so as to project outward from the wall portion 164 on the lower side of the processing side opening portion 24 of the cabinet 12. The blast material receiver 158 includes a pair of side walls 160 and a bottom wall 162 that connects the lower end portions of the side walls 160 and is inclined downward toward the cabinet 12 side, and is orthogonal to the protruding direction. The cross section in the direction of doing is formed in a substantially U shape. Here, the projection amount of the projection material receiver 158 is set to an amount corresponding to the moving range of the lower end portion 21 of the door portion 20 when the door portion 20 opens and closes the opening of the drum 14. Specifically, the projection material receiver 158 is provided in each of the state in which the door 20 closes the opening of the drum 14 (see FIG. 3) and the state in which the door 20 opens the opening of the drum 14 (see FIG. 4). Protrudes so as to be arranged below the lower end portion 21 of the door portion 20.

A communication portion 165 is formed on the wall portion 164 of the cabinet 12. The communication portion 165 is arranged near the blast material receiver 158 and above the bottom wall 162 of the blast material receiver 158, and penetrates the wall portion 164 so as to communicate the outside and the inside of the cabinet 12. Is formed.

Next, the operation of the shot processing apparatus 10 according to the present embodiment described above will be described.

As shown in FIG. 8A, when the work is loaded into the drum 14, the work loading position P1 is centered on the rotation axis L2 so that the opening 18 of the drum 14 projects upward from the loading/unloading port 16. Is turned to. In this state, the work introduced from the outside of the shot processing apparatus 10 is introduced into the drum 14 by the work introduction device.

When the loading of the work into the drum 14 is completed, as shown in FIG. 8B, the drum 14 is rotated about the rotation axis L2 to the work processing position P2 where the opening 18 of the drum 14 and the projector 42 face each other. To be done. When the drum 14 is placed at the work processing position P2, the door 20 closes the opening 18 of the drum 14, as shown in FIG. 8C. As a result, the interior of the cabinet 12 is sealed by the door 20, the upper contact member 146, the upper receiving portion 154, the lower contact member 150, and the lower receiving portion 156. In this state, the drum 14 rotates about the cylindrical axis L. As a result, the work in the drum 14 is agitated.

The drum 14 rotates about the cylindrical axis L, and the projector 42, the bucket elevator 36, the lower screw conveyor 48, and the dust collector 52 are operated (see FIG. 1 ). As a result, the shot material is thrown into the projector 42 from the bucket elevator 36 through the separator 38 and the shot material tank 40, the introduction pipe 46 and the introduction cylinder 44 (see FIG. 5). Then, the projection material is projected from the projector 42 onto the work in the drum 14, and the work is shot.

The blast material projected into the drum 14 moves to the outside of the drum 14 from the through hole 32 (see FIGS. 7A and 7B) of the drum 14 due to the rotation of the drum 14 together with the dust and the crushed material (scale) generated during the shot processing. Emitted. The ejected projection materials and the like are collected in the lower portion inside the cabinet 12 via the shielding member 120 and the drum case 136, and are collected in the lower portion of the bucket elevator 36 by the lower screw conveyor 48. Then, the bucket elevator 36 conveys the reusable projectile material to dust and crushed materials which are conveyed to the separator 38. The separated shot material is carried to the shot material tank 40 by the upper screw conveyor 39 and stored in the shot material tank 40, and is also supplied to the projector 42 through the introduction pipe 46 and the introduction cylinder 44 for reuse. It Dust, crushed material, and the like are discharged to the outside of the shot processing apparatus 10 through the crushed material discharge pipe 53 (see FIG. 1). Light dust or the like that does not collect in the lower portion of the cabinet 12 is sucked and discharged by the dust collector 52.

When the shot process is completed, the operation of the projector 42 is stopped, and the door 20 opens the opening 18 of the drum 14 as shown in FIG. 8D. Then, as shown in FIG. 8E, the drum 14 is rotated around the rotation axis L2 to the work discharge position P3, and the opening 18 of the drum 14 projects from the loading/unloading port 16 of the cabinet 12 toward the lower side of the apparatus. As a result, the work in the drum 14 moves to the work receiving trough of the work ejecting device and is carried out of the shot processing device 10 by a carry-out vibration feeder or the like, and a series of work is completed.

Next, the function and effect of the shot processing apparatus 10 of this embodiment will be described.

In the shot processing apparatus 10 according to the present embodiment, as shown in FIG. 3, since the projector 20 is provided on the door portion 20 that opens and closes the opening 18 of the drum 14, the work inside the drum 14 and the projector 42 are separated from each other. The distance between them becomes relatively short, and the projection efficiency of the projection material onto the work can be improved. Further, when the opening 18 of the drum 14 is opened, the projection port 43 of the projector 42 provided in the door portion 20 is arranged above the opening 18 of the drum 14. Therefore, the projection material leaked from the projector 42 through the projection opening 43 when the door 20 moves moves into the opening 18 of the drum 14. That is, it is possible to suppress the projection material from scattering outside the shot processing apparatus 10. Thereby, it is possible to suppress the scattering of the projection material to the outside without lowering the projection efficiency.

Further, the other end portions 100 and 101 of the link arm 90 are located above the one end portions 96 and 97 with the door portion 20 opening and closing the opening 18 of the drum 14, respectively. Therefore, the door portion 20 is in a state of being suspended from the cabinet 12, and moves within the range of being suspended from the cabinet 12 to open and close the opening 18 of the drum 14. That is, the movement range of the door portion 20 that opens and closes the opening 18 of the drum 14 is small. Further, when the link arm 90 becomes horizontal when opening and closing the door portion 20, the rotational load that rotates the link arm 90 becomes maximum, but the link arm 90 of the present embodiment is horizontal when opening and closing the door portion 20. It doesn't. As a result, since the door 20 can be moved with a small amount of power, the device for moving the door 20 can be downsized and the energy consumption can be reduced. Thereby, the cost and the running cost can be suppressed.

Further, when the projection material leaks from the projector 42 when the door 20 is opened and closed, the projection material can be received by the projection material receiver 158 corresponding to the moving range of the lower end 21 of the door 20. That is, it is possible to further prevent the projection material from scattering outside the shot processing apparatus 10. Thereby, it is possible to further suppress the scattering of the projection material to the outside of the shot processing device 10.

Furthermore, the blast material received by the blast material receiver 158 provided outside the cabinet 12 can flow into the cabinet 12 through the communication portion 165. Therefore, it is possible to prevent the shot material from overflowing from the shot material receiver 158 and scattered to the outside of the shot processing apparatus 10. Further, the operator does not need to collect the blast material collected in the blast material receiver 158.

Further, even if the projection material projected from the projector 42 passes through the through hole 32 of the drum 14, the projection material hits the first shielding portion 124 and the second shielding portion 126 of the shielding member 120. The blast material is dropped to the lower part in the cabinet 12 through the first communication hole 132 of the first shielding part 124 and the second communication hole 134 of the second shielding part 126 while damping the momentum. Therefore, it is possible to prevent the projection material that has come out from the through hole 32 of the drum 14 from bouncing back and scattering from the cabinet 12 to the outside. Thereby, the scattering of the shot material to the outside of the shot processing apparatus 10 can be further suppressed.

Further, since the shot material that has come out from the through hole 32 of the drum 14 hits the shielding member 120 and further the drum case 136 and is further attenuated, the abrasion of the inside of the cabinet 12 due to the shot material can be further suppressed. .. Thereby, the running cost can be further reduced. Further, since the drum case 136 is provided, the drum case 136 serves as a so-called sound-insulating wall so that noise during the polishing and cleaning of the work can be reduced.

Further, the shot material that has come out of the drum 14 from the through hole 32 of the drum 14 hits the drum case 136, is attenuated, and is discharged from the shot material discharge port 142 formed on the lower side of the drum case 136 to the lower part in the cabinet 12. Drop the projectile. Therefore, it is possible to prevent the projection material that has come out from the through hole 32 of the drum 14 from bouncing back and scattering from the cabinet 12 to the outside.

Further, since the case wall member 140 of the drum case 136 is detachable, and a plurality of members set to a size that can be carried by an operator are combined, it is easy even if the projection material is worn and is worn. Can be exchanged for. That is, maintainability can be improved.

Further, even if the projection material projected from the projector 42 is reflected in the drum 14 and scattered to the intake openings 57, 58 of the door section 20, the protectors 60, 88 cause the projection material to flow from the intake openings 57, 58 to the door. It is suppressed that the part 20 is exposed to the outside. Thereby, the scattering of the shot material to the outside of the shot processing apparatus 10 can be further suppressed.

Further, the size of the projection material introduction port 110 is set so that the introduction cylinder 44 can receive the projection material from the introduction pipe 46 of the projection material tank 40 even when the introduction cylinder 44 moves by opening and closing the door portion 20, It is possible to suppress the projection material from scattering from the introduction pipe 46 to the outside of the shot processing apparatus 10. Accordingly, it is possible to further suppress the scattering of the shot material to the outside of the shot processing apparatus 10.

Further, since the introduction pipe 46 follows the movement of the introduction cylinder 44, even when the introduction cylinder 44 moves by opening and closing the door portion 20, the projection material in the projection material tank 40 is transferred to the introduction cylinder 44. It can be reliably supplied. That is, it is possible to further suppress the projection material from scattering from the introduction pipe 46 to the outside of the shot processing apparatus 10. Accordingly, it is possible to further suppress the scattering of the projection material to the outside of the shot processing device 10.

Further, since the joint portion 118 is formed in the introduction pipe 46, even when the introduction cylinder 44 moves by opening and closing the door portion 20, the introduction pipe 46 can be bent without difficulty. As a result, the load on the introduction pipe 46 is reduced, so that the durability of the introduction pipe 46 can be improved as compared with the case where the introduction pipe 46 is formed of a bellows type hose or a rubber hose. As a result, running costs can be reduced.

In the present embodiment, the introduction pipe 46 is configured to follow the introduction cylinder 44 by the joint 118, but the present invention is not limited to this, and a bellows-type hose may be used to follow the introduction cylinder 44. May be.

Further, the door portion 20 has a structure that is opened and closed by a four-link mechanism including the door portion 20, the first link arm 92, the second link arm 94, and the cabinet 12, but is not limited to this and only a single link arm is provided. You may open and close with.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the gist of the present invention. Of course.

10 Shot Processing Device 12 Cabinet 14 Drum 15 Outer Wall 18 Opening 20 Door 21 Lower End 26 Drum Bottom Wall (Bottom Wall)
32 Through Hole 40 Projection Material Tank 42 Projector 43 Projection Port 44 Introducing Tube 46 Introducing Tube 57 Intake Opening 60 Protector 90 Link Arm 96 One End 100 Other End 110 Projection Material Introducing 118 Joint 120 120 Shielding Member 124 First Shielding Part 126 Second Shielding Part 132 First Communication Hole 134 Second Communication Hole 136 Drum Case 142 Projection Material Discharge Port P1 Work Loading Position P2 Work Processing Position P3 Work Discharging Position

Claims (11)

A shot processing device for blasting a workpiece with a projection material,
Cabinet and
A drum having a cylindrical shape with a bottom, which is housed in this cabinet and has an opening through which a work can be loaded. The work loading position where the work is loaded, and the work processing position where the work is blasted by the projection material. And the drum selectively arranged at a work discharge position where the work is discharged,
A projector that projects the projection material into this drum,
A door part in which a projection port for projecting material is formed while opening and closing the opening of the drum, wherein the projector is attached, and the projection part is adapted to project projection material from the projection port, Have
The door portion , the projection port is arranged above the opening of the drum when opening the opening of the drum,
Further, the cabinet has a projection material receiver provided on the lower side of the lower end portion of the door portion, and the projection material receiver corresponds to a horizontal movement range when the lower end portion of the door portion is opened and closed. A shot processing device provided. The door portion is attached to the cabinet via a link arm, and the link arm has one end rotatably attached to the door portion and the other end rotatably attached to the cabinet. 2. The shot processing apparatus according to claim 1, wherein the other end of the door is located above the one end in each of the state in which the opening of the drum is opened and the state in which the door is closed. In the vicinity of and above the side of the projection member receiving the cabinet, the communicating portion for communicating the interior of the projection member receiving said cabinet is formed, the shot processing apparatus according to claim 1. A plurality of through holes are provided in the outer peripheral wall of the drum, and a shield member is provided so as to cover the plurality of through holes from the outside of the drum. The shield member has a plurality of first communication holes. A double structure comprising a first shielding part having a hole and a second shielding part having a plurality of second communication holes formed at positions not overlapping the first communication hole of the first shielding part. The shot processing apparatus according to any one of 1 to 3 . The drum has a peripheral wall and the bottom wall, on the outside of the drum, the drum casing for covering the outer peripheral wall and the bottom wall integrally is provided, according to any one of claims 1 to 3 Shot processing device. The shot processing apparatus according to claim 4 , wherein a drum case that covers the drum and the shielding member is provided on the outer side of the shielding member. The lower side of the drum casing, when the drum is in a workpiece processing position, the projection material discharge port inside the shot material drum casing is discharged to the outside of the drum casing is formed, according to claim 5 or The shot processing apparatus according to claim 6 . An intake opening that penetrates the outside of the door is formed in the door, and the projection material is prevented from passing through the intake opening to the outside of the door on the drum side of the intake opening. The shot processing apparatus according to any one of claims 1 to 7 , further comprising a protector. Furthermore, a projection material tank provided on the upper side of the projection machine for storing the projection material, an introduction pipe attached to the projection material tank for supplying the projection material to the lower side, and a lower side of the introduction tube. And a guide tube provided on the guide tube, the projecting material introducing port having an opening toward the upper side is formed at a position corresponding to the introducing tube, and the projecting material introducing port of the introducing tube is 9. The size according to any one of claims 1 to 8 , wherein the size is set such that the projection material supplied from the introduction pipe can be received even when the introduction cylinder moves when the door portion is opened and closed. Shot processing equipment. The shot processing apparatus according to claim 9 , wherein the introduction tube moves in accordance with opening and closing of the door portion, and the introduction tube moves following the movement of the introduction tube. The shot processing apparatus according to claim 10 , wherein a joint portion that bends following the introduction tube is formed in the introduction tube.

Images